916041663665861 has 4 divisors (see below), whose sum is σ = 916042597223424. Its totient is φ = 916040730108300.

The previous prime is 916041663665809. The next prime is 916041663665899. The reversal of 916041663665861 is 168566366140619.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 916041663665861 - 2⁶ = 916041663665797 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 916041663665791 and 916041663665800.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (916041663685861) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 465305375 + ... + 467269916.

It is an arithmetic number, because the mean of its divisors is an integer number (229010649305856).

Almost surely, 2^{916041663665861} is an apocalyptic number.

It is an amenable number.

916041663665861 is a deficient number, since it is larger than the sum of its proper divisors (933557563).

916041663665861 is an equidigital number, since it uses as much as digits as its factorization.

916041663665861 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 933557562.

The product of its (nonzero) digits is 201553920, while the sum is 68.

The spelling of 916041663665861 in words is "nine hundred sixteen trillion, forty-one billion, six hundred sixty-three million, six hundred sixty-five thousand, eight hundred sixty-one".